29 lines
475 B
C
29 lines
475 B
C
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <flash.h>
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#include <macros.h>
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#include <fs/block.h>
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int block_is_erased(struct flash_dev *dev, uint32_t addr, uint32_t len)
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{
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char buf[32], cmp[32];
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size_t count;
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memset(cmp, 0xff, sizeof cmp);
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for (; len; addr += count, len -= count) {
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count = min(len, sizeof buf);
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if (flash_read(dev, addr, buf, count) < 0)
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return -1;
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if (memcmp(buf, cmp, count) != 0)
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return -1;
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}
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return 0;
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}
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